#027FCB
Closest named color: Water Blue (#0E87CC). oklch(57.8% 0.148 246), rgb(2, 127, 203).
Aa
Black text reads best on this color (4.90:1).
About this color
#027FCB is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.148 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.023 away. Black text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 4.90:1 |
| White text | 4.28:1 |
Values
| HEX | #027FCB |
| RGB | rgb(2, 127, 203) |
| HSL | hsl(203, 98%, 40%) |
| OKLCH | oklch(57.8% 0.148 246) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #027FCB | 4.28:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #027FCB | 4.90:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #027FCB text on white | 4.28:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #027FCB text on black | 4.90:1 | AA | Lc -32.7 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C6DCF1
oklch(88.5% 0.037 247)
-
Step 300
300
#9EC6EA
oklch(81% 0.067 245.9)
-
Step 400
400
#65A7DF
oklch(70.7% 0.107 245.7)
-
Step 500
500
#348FD6
oklch(63% 0.136 246.2)
-
Step 600
600 (this color)
#027FCB
oklch(57.8% 0.148 246)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800
#005387
oklch(42.8% 0.11 245.8)
-
Step 900
900
#0C456D
oklch(37.7% 0.088 245.4)
-
Step 950
950
#0B2840
oklch(26.9% 0.056 247)
#027FCB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5A83CE | 0.057 |
| Deuteranopia (no green cones) | #3D73CA | 0.038 |
| Tritanopia (no blue cones) | #00929B | 0.105 |
| Achromatopsia (no color) | #7A7A7A | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #027FCB
#027FCB
oklch(57.8% 0.148 246)
- #AC6700
#AC6700
oklch(57.7% 0.129 65.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #027FCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.023
- Windows Blue #3778BF ΔE 0.029
- Nice Blue #107AB0 ΔE 0.042
- Steel Blue #4682B4 ΔE 0.050
- Cool Blue #4984B8 ΔE 0.050
- Blue NCS #118AB2 ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.059
- Mid Blue #276AB3 ΔE 0.063
Use #027FCB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.